Not for serious work... you kind of need to understand where I was working. I used to go to a work college, and the schedule revolved around classes. Sometimes, I would come to work not intending on doing anything but ground work or something, and it would just be a few new crew members, me, and a stuck line or something. So... I'd go up and reset the line, etc... I never actually worked in them. Sawdust loves to get in lowtop skate shoes, which sucks. So, with maybe one or two exceptions where I pruned a branch or two out, I always just ran up and ran back down in them.